:Isotopic Separation and Enrichment is a very resent lay-mans understandable article ( 2014 ).
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Due to the different cross sections of 10 B and 11 B, materials containing boron enriched in 10 B by isotopic separation are frequently used.
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As described in " isotopic separation techniques to enrich the silicon until it is nearly pure 28 Si, which has a relative atomic mass of.
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:: : Isotopic Separation and Enrichment goes into deuterium and other other isotopes separation methods used in industry and adds some interesting background .-- talk ) 20 : 38, 28 December 2014 ( UTC)
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Uranium enrichment is difficult because the chemical properties of 235 U and 238 U are identical, so physical processes such as gaseous diffusion, gas centrifuge or mass spectrometry must be used for isotopic separation based on small differences in mass.
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Although there is an attempt to cover the range of variability on Earth with standard atomic weight figures, there are known cases of mineral samples which contain elements with atomic weights that are outliers from the standard atomic weight range . Lithium represents a unique case where the natural abundances of the isotopes have in some cases been found to have been perturbed by human isotopic separation activities to the point of affecting the uncertainty in its standard atomic weight, even in samples obtained from natural sources, such as rivers.
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